681887619325 has 12 divisors (see below), whose sum is σ = 922407979968. Its totient is φ = 495918268400.

The previous prime is 681887619319. The next prime is 681887619379. The reversal of 681887619325 is 523916788186.

It is not a de Polignac number, because 681887619325 - 2⁹ = 681887618813 is a prime.

It is a super-2 number, since 2×681887619325² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1239795397 + ... + 1239795946.

It is an arithmetic number, because the mean of its divisors is an integer number (76867331664).

Almost surely, 2^681887619325 is an apocalyptic number.

It is an amenable number.

681887619325 is a deficient number, since it is larger than the sum of its proper divisors (240520360643).

681887619325 is a wasteful number, since it uses less digits than its factorization.

681887619325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479591364 (or 2479591359 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 64.

The spelling of 681887619325 in words is "six hundred eighty-one billion, eight hundred eighty-seven million, six hundred nineteen thousand, three hundred twenty-five".